PEREZ-DUERKSON UNIT

Oil · District 04 · Lease #10778

Operator: WELDERXP LTD.

Fields: LAUGHLIN-KIBBE (5300)

Cum Oil

66k BBL

Cum Gas

71 MCF

casinghead

Wells

1

Production

1993-01 — 2011-09

Peak Month

1994-12

Production History

Cum Oil: 65,855 BBL Cum Gas: 71 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

583 BBL/mo

Di (annual)

16.3%

b-factor

0.0

EUR

42,844 BBL

R-squared

0.637

type

exponential

Operator History (from monthly production reports)

2023-01 — 2026-07 WELDERXP LTD. 43 mo

2015-05 — 2022-12 WELDER EXPLORATION & PROD., INC. 92 mo

2006-06 — 2015-04 CYMRI, L.L.C. 107 mo

2002-06 — 2006-05 CYMRI CORPORATION, THE 48 mo

1998-10 — 2002-05 TRANS-PECOS RESOURCES, INC. 44 mo

1993-01 — 1998-09 KIBBE, ANNA S. 69 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-249-31872	WELDERXP LTD.	1	5,500	1985-03-06